233121233 has 2 divisors, whose sum is σ = 233121234. Its totient is φ = 233121232.

The previous prime is 233121223. The next prime is 233121247. The reversal of 233121233 is 332121332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233111824 + 9409 = 15268^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 233121233 - 2¹⁸ = 232859089 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (233121223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116560616 + 116560617.

It is an arithmetic number, because the mean of its divisors is an integer number (116560617).

Almost surely, 2^233121233 is an apocalyptic number.

It is an amenable number.

233121233 is a deficient number, since it is larger than the sum of its proper divisors (1).

233121233 is an equidigital number, since it uses as much as digits as its factorization.

233121233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 233121233 is about 15268.3081250019. The cubic root of 233121233 is about 615.4516549165.

Adding to 233121233 its reverse (332121332), we get a palindrome (565242565).

Subtracting 233121233 from its reverse (332121332), we obtain a palindrome (99000099).

The spelling of 233121233 in words is "two hundred thirty-three million, one hundred twenty-one thousand, two hundred thirty-three".